1.
If you ~, you admit that you are defeated or that you cannot do something.
All right. I ~. What did you do with the ship?
PHRASAL VERB: V P
2.
If you ~, you agree to do something that you do not want to do.
I pressed my parents until they finally gave in and registered me for skating classes...
Officials say they won’t ~ to the workers’ demands.
PHRASAL VERB: V P, V P to n